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cs.LG2026
Kernel weighted importance sampling for off-policy evaluation in contextual bandits
Joshua Spear, Matthieu Komorowski, Rebecca Pope +1
This article presents a novel estimator for performing off-policy evaluation using only offline data for contextual bandits. The proposed estimator, Kernel-WIS is demonstrated to b…
cs.LG2026
Evaluating covariate balance for long time horizon Markov decision processes
Joshua Spear, Rebecca Pope, Neil J Sebire
This article explores the application of covariate balance diagnostics for detecting the presence of hidden confounding/model miss-specification in studies applying offline reinfor…